Transformer



Feb. 16 1926. 1,573,077

L. G. MOCLINTOCK TRANSFORMER Filed 00tll. 1921 IN VEN TOR /A; ATTOPatented Feb. 15, 1926.

. UNITED STATES LEWIS G. IQOLIN'I'QCK, OI PITTSBURGH, QEHNSYIN 'ANIA,ASSIGNOB 'IQ PITTSBURGH PATENT OFFICE.

rmsromn COHPANY,,A QOBPOBATIOK OI PENNSYLVANIA.

TBANBIOBKEB.

Application and October 11, 1921. mm llo. 507,122. I

To, all whom it ma concem! Beit known that LEWIS G. MoCmn Took, acitizen of the United States. residing at Pittsbur h, in the county ofAllegheny and State of ennsylvania, have invented certain new and usefulImprovements in Transformers, of which the following is a speciasthesheet metal si fication.

This invention relates to transformers and particularly to transformersimmersed in oil in a tank. In such structures it is highly important tohold the transformer from shifting in the tank and also to brace thetank against shocks, for the holding means is objectionable if itinvolves a. relative stressing between the arts of the tank such dbs andbottom plate.

At the same time it is desirable to have different sizes of transformersand tanks interchangeable so that a given transformer may be fitted indid'erent sizes of tanks and vice verse to have a given tank readily adatable for diiferent transformers.

The structure of this invention provides for the accurate positioningand holding of the transformer in the tank and protects the tank wallsagainst weakening stresses in service and transportation. At the sametime the holding means is readily adaptable for various sizes oftransformers so as to give a wide interchangeability of transformers andtanks.

In the accompanying drawings illustratin the inventionig. 1 is avertical sectional view of a transformer and tank with parts brokenaway, and v Fig. 2 is a die ammatic plan view of the transformer holdingmeans at the bottom.

In the specific embodiment of the invention shown in the drawings a baseB carries a tank K in which is the transformer T. Tie rods 5 areprovided extending from the base B through eyelets 6 at the top of thetransformer and the base, tank and transformer are lifted as a unit bythese tie rods.

The tank K has its bottom plate 8 flanged the transformer in place aframe of an le bars 15 is fastened to the bottom 8 prefera ly by weldintheir horizontal flanges to the bottom. hese angle bars 15 have theirhorizontal flanges 16 facin outward and their vertical flan es 17forming a rectangle or other shape adapted to fit and hold thetransformer frame F set into-it. To insure that frame F will drop intoplace within the angle bar strips as it is lowered, guide members 18 areprovided welded to the angle bars and inchned outward from the upperedges thereof to form guides for the frame F as it is lowered intoplace. These angleibars or stops 15 prevent the transformer fromshifting on the bottom plate 8 and receive the lateral thrusts. Them isno contact between the transformer and sides or body 11, the transformerbeing securely held to the center of the bottom 8 by the stops 15 whichdo not connect to the tank sides but are independently fastencd in placeon the tank bottom. The tank body 11 is thus relieved of any sidestresses or thrusts from the transformer which is anchored firmly inplace by the bottom structure independently of the tank sides.

To hold the transformer T securely. against the tank bottom and also tohold the upper part of the tank against sidewise strains screw posts 20are carried upward from the braces between vertical corner members 21 offrame it on the heavy transformer core, and these pests carry nuts,adapted to press upward on the transformer cover 22 and downward on thebottom plate 8. The cover 22 is clamped at its edges to the top flangeof the tank body 11. and in this way the transformer is verticallygripped between the cover and the bottom of the tank, while laterally.it is held secure by the stops 15 directly transmitting any sidethrusts to the bottom plate. The tank sides are protected againstexcessive stresses and these sides and the weld between the sides withthe bottom remain intact and secure against weakening in service. Thisavoids the danger of leakage and even permits the whole transformer tobe shipped in assembled condition with oil in the tank. The holdingframe may be made of any desired size within the limits'of the tankframe 15 so as to readily adapt the tank for smaller or largertransformers simply by forming the frame to fit the desired size oftransformer. A 'ven size of tank isthus easily fitted to different sizesof transformers without alteration of the transformer structure, stobksof tanks and transformers to as sembled in widely variant manner andavoids the necessity of forming the transformer structure to fit ,QarticuIar size of tank.

-I claim:-

1. The combination with a transformerfof a tank thereforhaving a sheetmetal body formed of sides and an imperforated bottom plate and separatestop members fastened on said plate and adapted to retain saidtransformer spaced from the sides of said tank, said stop members alsobeing spaced from the sides of .said tank .and being adapted forattachment to said plate in positions to accommodate various sizes 0transformers.

2. The combination with a transformer, of a tank therefor having a sheetmetal body comprising sides and a bottom welded thereto, said bottomplate laterally of said transformer being curved upwardly toward itswelded connection with the sides and stop members fastened to saidbottom plate and spaced from the sides and adapted to retain saidtransformer spaced from the sides.

3. The combination with a sheet metal tank having sides and a bottomwelded there This enables se arate plate to, of a transformer in saidtank spaced from said sides, separate angle members welded to saidbottom and. spaced from said sides, said members serving to retain saidtransformer 'in position in said tank and being formed with inclinedguiding portions to assist in seating said transformer in position.

1 4. The combination of a base, a sheet metal tank on said base, saidtank having sides and a bottom welded thereto, a transformer in saidtank spaced from said sides, a cover for said tank means connecting saidtransformer and cover and adapted to press upwardly on said cover meansconnecting said base and cover and adapted to press downwardly on saidcover and means secured to'the bottom of said tank and spaced from thesides for retaining said transformer in position.

5. The combination with a transformer of a tank therefor havingcorrugated sheet metal sides and a bottom plate in abutting contact withthe lower portion of said sides and welded thereto, means for supportingsaid transformer tank along said bottom plate and means for rigidlysecuring said transformer to the central portion of said bottom plate,said bottom plate laterally of said transformer being peripherallyarched and free to bend under lateral and vertical stresses.

LEWIS G. MGCLINTOCKJ

